It depends on whether or not the site maker you're using (like proboards, invisionfree...) allows HTML. If it does, then follow this:
1.) Search "music codes" in a search engine and select a few of the choices to see what kind of songs that they offer. If you don't find anything you like from those, try either
Vitalize or
Diamondrains.
2.) Copy the code from one of those sites. It's usually found at the bottom of the song title.
3.) Paste the code anywhere in your site editor that allows HTML. In proboards, it's usally the header or the footer. With Invisionfree, it's the board wrappers.
4.) Save the changes, go to your board index, and see if it worked. If not, let me know.
